Philip diehl



(Model.) 2 Sheets-Sheet 1.

P. DIEHL.

PEEDING MBCHANISM FDR SEWING MAGH1NES. Nv. 339,624. Patented Apr. 13, 1886.

l, z'nesses':

(Model.) 2 sheets-sheen 2. P. DIBHL.

Y FEBDING MEGHANISM FOB. SEWING MACHINES. No. 339,64.

- lhmgw Patented Apr.. 13, 1886.

UNTTED STATES PATENT @EETCEo PHILIP DIEHL, OF ELIZABETH, NEW' JERSEY, ASSIGNOR T0 THE SINGER MANUFACTURING ("OMPANY OF NEW' JERSEY.

FEEDING MECHANISM FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 339.624, dated [ag-vii 13, 1886.

` Application filed (ictolmr l0, 1985. Serial No. 179,541. {Model} To @ZZ whom, it may concern:

Be it known that I, PHILIP Diner., a citizen of the United States, residing at Elizabeth, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Feeding Mechanism for Sew ingachinesof which the following is aspecirication, reference being had therein to the accompanying drawings.

The object of my invention is to provide a simple and effective foar-motioned7l feeding mechanism for sewing-macl1ines,in which all oi the movements of the feed-bar are positive, and in which the horizontal or feeding movements thereol` are easily regulated.

lin carrying out my invention I provide a driving-shaft with two eccentrics, so placed that their points oi' greatest throw are at an angle of about ninety degrees ltor about at a right angle) to each other. To the frame of the machine I pivot a rocker, to which the feed-bar is jointed at its rear end,the forward end of said bar being forked to embrace ono of the said eccentrics, which thus imparts positive np-anddown movements to said bar. To the feed-bar, near its rear end, pivoted :i yoke, which is forked or slotted to embrace the other of the said eccentriesrthe forward end ofthe said yoke being jointed to a link., which in turn `is jointed to a feed-regulating level' near the free. end of the latter. The yoke and link form a toggle, and when the regulating-lever is adjusted so that the part of said lcver to which the link is jointed is on a level, orncarly so, with the pivot by which the yoke is 'jointed to the feedbar. said yoke, :is the eccentric rotates therein, will vibrate vertically on its pivot, imparting little or no horizontal movement to the vfeed -bar; but when the free end of the regulatinglever is depressed to bring the point of connection of the link therewith more orless below the point of connection of the yoke and feed-bar, and thns shorten the distance between these two points, the yoke, as it moves vertically, will also be forced more or less horizontally, and will thus impart horizontal movements to the feed-bar.

In the drawings, Figure l is a side elevation of a sewing-machine embodying my invention. Fig. 2 a front end elevation, and

Fig. 3 a plan view, of the same. Fig. 4 is a detail plan view of the feeding mechanism, and Fig. 5 is a detail sectional View thereof.

Aindieates the fra-me of the machine, in the lower part of which is jonrnaled the drivingshaft B, connected by a crank and pitman with the rear arm of a rock-shaft, C, pivoted by center screws to the upper partv of the frame A, and having at its forward end an arm connected by a link to a block secured to the needle-bar D. Thus, as the driving-shaft rotates, the needle-bar will be reciprocated vertically in a wellknown manner.

The driving-shaft, as herein shown, carries at its Aforward end a Iillcox d: Gibbs hook, E, cooperating with the needle to form chain stitches.V

The. parts just above described are merely shown incidentally with my invention to illus trate its operation in connection with a compiete machine.

The driving-shaft is provided at its forward end with two eccentrics, l() and 1]., the former being embraced by the slotted or forked free end of the feed-bar 12, carrying the feed-dog 13%. The feed-bar is jointed at la to a feed rocker, l5, which is pivoted on a pin or stud, 16, attached to the machineframe A. Embracing the eccentric Il is a yoke, 17, pivotally attached at its rear end to the feed-bar l2, and jointed at its forward end to a link, 1S, which in turn is jointed at 19 to the feedregulating lever 20, pivotcd at 2l to the frame A. I prefer to attach to the work-plate F a gradnated segment, 22, and to provide the regulating-lever 20, the end of which projects through aslot in said segniei'1t,with an indexpin, 23, so that the operator may readily adjnst the said lever to any desired position.

From the foregoing it will be apparent that as the driving-shaft B is rotated the eccentric l() will impart positive up-and-down movements to the feed-bar 12 and to the feed-dog 13, carried thereby, while the eccentric 1l, working in the yoke 17, will canse said yoke to move the feed-bar connected therewith horizontally to feed the work, the horizontal movements being positive in both directions, and the extent of these movements being governed by the position to which the regulatinglever may be adjusted, as above described.

ICO

2 l y339x624 Having' thus described myinvention, [claim I with the work-plate having a graduated segand desire to secure by Letters Patentl ment,the driving-shaft having two eecentrios,

l. In a sewing-machine, the combination, the feedbar, feeddog, rocker, yoke, and link, [5 with a driving-shaft having two ecoentrics, of a regulatingflever projecting through Said 5 of a feed-bar carrying a feed-dog', and forked segment and provided with an index-pin, subf to .embrace one ot said ecoentrics, a rocker, to stantially as set forth.

which said bar is pivotally Connected, a yoke In testimony whereof I affix my signature jointed to said feed-har and embracing the i in presence of two witnesses.

other of Said ecoentreae regulating-lever, I PHILIP DIEHL. 1o and elink connecting thelatter with said yoke7 NVitnesses:

substantially as set fort-h. JAMES G. GREENE, 2. Ina sewi'ng-nmohine7 the combination, XVM. H. INSLEE. 

